Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 25S773889 found under Worm Shaft by Footejones Illinois Gear Co Div. The National Stock Number assigned to this part is 3040010356673, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 25S773889.